Watch having a rectangular case enclosed in a protecting sheath



March 26, 1957 B. DITESHEIM 2,786,323

WATCH HAVING A RECTANGULAR CASE ENCLQSED IN A PROTECTING SHEATH Filed April 1a, 1 56 rllllllllll United States Patent WATCH HAVING A RECTANGULAR CASE EN- CLOSED IN A PROTECTENG SHEATH Bernard Ditesheim, La Chaux-de-F-onds, Switzerland, assignor t0 Fabriques Movado, La Chaux-de-Fonds, Switzerland, a Swiss firm Application April 13, 1956, Serial No. 573,005

Claims priority, application Switzerland September 24, 1955 2 Claims. c1. ss-ss My invention has for its object a watch having :1 rectangular case enclosed inside a protecting sheath.

My improved watch is characterized by the fact that there is provided along each side wall of the case a flap pivotally secured to said side wall and extending over the case, said flap being urged by a spring against the inner surface of the corresponding cap facing the case; each flap is provided with a projection which engages, when the cap is completely open a recess formed near the edge of the latter so as to form an abutment therefor, and it is also provided with a tail-piece which is adapted to be depressed manually so as to urge the flap towards the case against the action of the spring into a position for which the flap no longer acts on the cap.

I have illustrated by way of example in accompanying drawings a preferred embodiment of my invention. In said drawings:

Fig. l is a view from above of the watch.

Figs. 2 and 3 are cross-sections thereof through line lI-lI of Fig. 1 for two different stages of operation.

The watch illustrated includes a rectangular case enclosed inside a sheath formed by two caps 2 and 3 which latter may slide longitudinally towards and away from each other over the case with a view to enclosing the latter and to uncovering its dial respectively.

Along each of the side walls of the case is mounted a flap 4 pivotally secured to the corresponding side wall through the agency of the trunnions or tenons 5. A transverse spring blade 6, secured through one end to the corresponding flap and the free end of which 7 engages transversely the upper surface of the case urges permanently the flap away from the latter and towards the inner surface of the corresponding cap 2.

The flap is provided along its free edge facing the plane separating the sheath caps with an outer projection 8 which, in a position corresponding to the complete opening of the sheath as illustrated in Fig. 3, engages a recess Fatented Mar. 2%, i957 9 in the inner surface of the cap so as to hold it in the position illustrated.

When it is desired to disconnect the caps of the sheath and to move the caps outwardly, it is sufiicient to depress the tail-pieces 10 also provided along the edges of the flaps so as to urge the latter towards the case against the action of the springs 7, which releases the caps with reference to the said flaps, whereupon the caps may be shifted outwardly with reference to the position illustrated in Fig. 2.

What 1 claim is:

1. In a watch, the combination of a rectangular case, a protecting sheath enclosing same and including two caps opening towards each other and adapted to move towards and away from each other, a flap pivotally secured to each side wall of the case perpendicular to the direction of movement of the caps and extending over the case, a spring urging each flap against the inner surface of the corresponding cap, a projection rigid with the free edge of each flap and directed away from the case, a tail-piece also rigid with the edge of each flap and directed towards the plane of symmetry of the case halfway between the two side walls and adapted to be depressed against the action of the spring when the caps are spaced apart, and means associated with the inner surface of each cap and adapted to engage the projection on the corresponding flap under the action of the spring when the cap is shifted into a position for which said means register with said projection.

2. In a watch, the combination of a rectangular case, at protecting sheath enclosing same and including two caps opening towards each other and adapted to move towards and away from each other, each cap being provided with a recess in its inner surface near its free edge opposite the other cap and facing the upper surface of the case, a flap pivotally secured to each side wall of the case perpendicular to the direction of movement of the caps and extending over the case, a spring urging each flap against the inner surface of the corresponding cap, a projection rigid with the free edge of each flap and directed away from the case, each projection being adapted under the action exerted by the corresponding spiing on the associated flap, to enter the recess in the cap facing it when said cap is in its outermost position, a tail piece also rigid with the free edge of each flap and directed towards the plane of symmetry of the case halfway between the two side walls and adapted to be depressed against the action of the spring when the caps are spaced apart.

No references cited. 

